From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit ceabbf94c317c6175dee6e91805fca4a6353745a ]
The R9A06G032 clock driver uses an array of packed structures to reduce kernel size. However, this array contains pointers, which are no longer aligned naturally, and cannot be relocated on PPC64. Hence when compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g. PowerPC allyesconfig), the following warnings are produced:
WARNING: 136 bad relocations c000000000616be3 R_PPC64_UADDR64 .rodata+0x00000000000cf338 c000000000616bfe R_PPC64_UADDR64 .rodata+0x00000000000cf370 ...
Fix this by dropping the __packed attribute from the r9a06g032_clkdesc definition, trading a small size increase for portability.
This increases the 156-entry clock table by 1 byte per entry, but due to the compiler generating more efficient code for unpacked accesses, the net size increase is only 76 bytes (gcc 9.3.0 on arm32).
Reported-by: Stephen Rothwell sfr@canb.auug.org.au Fixes: 4c3d88526eba2143 ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Link: https://lore.kernel.org/r/20201130085743.1656317-1-geert+renesas@glider.be Tested-by: Stephen Rothwell sfr@canb.auug.org.au # PowerPC allyesconfig build Acked-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/renesas/r9a06g032-clocks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index 1907ee195a08c..f2dc625b745da 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -55,7 +55,7 @@ struct r9a06g032_clkdesc { u16 sel, g1, r1, g2, r2; } dual; }; -} __packed; +};
#define I_GATE(_clk, _rst, _rdy, _midle, _scon, _mirack, _mistat) \ { .gate = _clk, .reset = _rst, \